Today’s patio doors are characterized by offering an optimal combination of design and insulation, with an increasing emphasis on providing spaces with greater luminosity. The S-LIM system gives prominence to glass without sacrificing excellent technical performance. This sliding patio door system stands out for its minimalist aesthetics, where the slim interlock has been reduced to 35 mm, and for its simple and intuitive fabrication.

Following Exlabesa’s commitment to the development of systems that contribute to sustainable building, the S-LIM series has an Environmental Product Declaration, which makes it an excellent option for obtaining sustainable building certificates such as BREEAM, LEED or GREEN.

  • Slim interlock: 35 mm
  • 1, 2, 3 and 4 tracks
  • Fixed-sash and pocket option
  • Possibility of recessing the frame up to the finished floor level both inside and outside
  • Compatible with the RS window suite range
Technical information
Air permeability* UNE-EN 1026:2017; UNE-EN 12207:2017 Class 3
Water tightness* UNE-EN 1027:2017; UNE-EN 12208:2000 Class 7A
Wind load resistance* UNE-EN 12211:2017; UNE-EN 12210:2017 Class CE2100
Thermal insulation Uw** UNE-EN ISO 10077-1:2010 Up to 1.1 W/m2K
Sound insulation Rw UNE-EN ISO 10140-2:2011 36 dB (-1; -2)


* Specifications of 2-sashes window of 1230×1480 mm

** Specifications of a 2-sashes balcony window of 3000×2300 mm

Maximum recommended dimensions (1 sash): 2700x2700 mm

Maximum recommended weight: 300 kg/sash

Maximum glazing: 32 mm

Polyamide: 34 mm

Slim interlock: 35 mm 

1, 2, 3 and 4 tracks 


Possibility of recessing the frame up to the finished floor level both inside and outside 

Compatible with the RS window suite range 


The new version of the S-LIM patio door is designed to cause minimal visual disruption at the interlock, as well as a reduced view in outer frame and sash, giving it a contemporary, minimalist aesthetic, in keeping with modern architectural trends.


The rollers of the S-LIM slide allow the sliding of leaves that can reach 300 kg. With respect to the locking there are two possibilities, it can be embedded or it can be multipoint with the possibility of micro-ventilation.


The S-LIM sliding patio door has a classification of class 3, class 7A and class CE2100 in weather tests. In addition, it can incorporate insulating cellular polyethylene foams that can achieve an U value up to Uw 1.1 W/m²K.


It allows compositions of 2, 3 and 4 leaves in outer frames of 2, 3 and 4 tracks. It is also possible to place leaves and fixed elements in the same outer frame, which saves materials and fabrication time, as well as the pocket solution that allows the complete opening of the unit thanks to the fact that the leaves are completely hidden in the wall.

Technical manual
CAD sections

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Projects using system S-LIM

Lima University – F2

Lima (Perú)
More info